package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.model.vo.SkuItemSaleAttrsVo;
import com.atguigu.gulimall.product.model.vo.SkuItemVo;
import com.atguigu.gulimall.product.model.vo.SpuItemAttrGroupVo;
import com.atguigu.gulimall.product.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {
    @Autowired
    private SkuImagesService skuImagesService;
    @Autowired
    private SpuInfoDescService spuInfoDescService;
    @Autowired
    private AttrGroupService attrGroupService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and(w -> w.eq("sku_id", key).or().like("sku_name", key));
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            queryWrapper.eq("catalog_id", catelogId);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            queryWrapper.eq("brand_id", brandId);
        }
        String max = (String) params.get("max");
        if (!StringUtils.isEmpty(max) && new BigDecimal(max).compareTo(BigDecimal.ZERO) > 0) {
            queryWrapper.le("price", max);
        }
        String min = (String) params.get("min");
        if (!StringUtils.isEmpty(min)) {
            queryWrapper.ge("price", min);
        }

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                queryWrapper
        );
        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        return this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id", spuId));
    }

    @Autowired
    private ThreadPoolExecutor executor;

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、sku基本信息 pms_sku_info
            SkuInfoEntity info = this.getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, executor);
        CompletableFuture<Void> imagesFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息 pms_sku_images
            List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, executor);

        CompletableFuture<Void> saleAttrsFuture = infoFuture.thenAcceptAsync((result -> {
            //3、获取spu销售属性组合
            List<SkuItemSaleAttrsVo> saleAttrsVos = skuSaleAttrValueService.getSaleAttrsBySpuId(result.getSpuId());
            skuItemVo.setSaleAttr(saleAttrsVos);
        }), executor);
        CompletableFuture<Void> spuInfoDescFuture = infoFuture.thenAcceptAsync((result -> {
            //4、获取spu基本信息
            SpuInfoDescEntity spuInfoDesc = spuInfoDescService.getById(result.getSpuId());
            skuItemVo.setDesc(spuInfoDesc);
        }), executor);
        CompletableFuture<Void> attrGroupFuture = infoFuture.thenAcceptAsync((result -> {
            //5、获取spu规格参数
            List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuId(result.getSpuId(), result.getCatalogId());
            skuItemVo.setGroupAttrs(attrGroupVos);
        }), executor);

        //等待所有任务都完成
        CompletableFuture.allOf(infoFuture,imagesFuture,attrGroupFuture,saleAttrsFuture,spuInfoDescFuture).get();

        return skuItemVo;
    }



}